HandBrake OpenCL Builds Available

Discussion in 'Videocards vs General Purpose - NVIDIA Ageia PhysX' started by Espionage724, Jan 30, 2013.

  1. Espionage724

    Espionage724 Guest

  2. BetA

    BetA Ancient Guru

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    nice find..
    finally some openCL support...
    any word of quality?
     
  3. BlackZero

    BlackZero Ancient Guru

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    Thanks for posting, have been waiting for a release build for months but this should be interesting to test.
     
  4. ViperXtreme

    ViperXtreme Ancient Guru

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    nice, will try it soon, tho kepler GPUs are not that strong in GPGPU vs previous generations D:
     

  5. Anarion

    Anarion Ancient Guru

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    It certainly does not have OpenCL encoding. It looks like OpenCL is used for cropping and scaling.
     
  6. BlackZero

    BlackZero Ancient Guru

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    Just tried this version and it does perform better and make use of the GPU when OpenCL and UVD usage is enabled. However, it really does depend on the codec and, as mentioned in the release notes, on whether the video is being scaled.

    The final quality seemed fine to me, but I need to do more testing to be sure.

    Here's some comparisons.

    1080p to 1080p x264

    Standard

    [​IMG]

    OpenCL and UVD

    [​IMG]


    1080p to 720p x264

    Standard

    [​IMG]

    UVD only

    [​IMG]

    OpenCL and UVD

    [​IMG]

    OpenCL and UVD - Complete

    [​IMG]


    1080p x264 to 1080p mpeg

    Standard

    [​IMG]

    OpenCl and UVD

    [​IMG]


    Hopefully we'll see better performance and more supported features soon.
     
    Last edited: May 20, 2013
  7. ShutDown_Hussain

    ShutDown_Hussain Active Member

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    thank you. was waiting for this.
     
  8. Espionage724

    Espionage724 Guest

    Hmm, seems the latest nightly (as of 2/19) has some new settings:

    [​IMG]

    No idea what HWD Support is. While re-encoding a video, I noticed my GPU clocks went to media clocks instead of idle.

    Edit: Also take note of the warning on top of the nightly page:
     
    Last edited by a moderator: Feb 21, 2013
  9. sajara

    sajara New Member

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    These are my results with 5436 64 bit version win Windows 8. 13.4 AMD drivers for GPU.

    [​IMG]

    [​IMG]

    [​IMG]

    with HDW acceleration enconding dropped by 50%
     
  10. wh3resmycar

    wh3resmycar Member

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    hi, i figured i post my question here instead of making a new one. i have a hd7750 (ddr3). i'm confused as to why am i not able to utilize opencl via handbrake.

    any tips on how to enable this? i need to rip some vids badly.
     

  11. Pill Monster

    Pill Monster Banned

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    Handbrake only has partial OpenCL support atm. Performance gains will only be seen if you are downscaling content, e.g. 1080p to 720p.

    Assuming you have v0.99, there are two checkboxes under the "Output Settings" section. Check the one for OpenCL.

    The other is for DXVA2 encoding, this feature is Windows-only and only works on sources which can be decoded via Libav.
     
    Last edited: Aug 25, 2013
  12. wh3resmycar

    wh3resmycar Member

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    that's the problem. i'm not getting the 2 checkboxes. and i'm using 0.9.9..

    this is crazy. any other tips?
     
  13. Pill Monster

    Pill Monster Banned

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  14. wh3resmycar

    wh3resmycar Member

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  15. poppy10

    poppy10 Member

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    HWD = Hardware Decode. It uses the GPU to decode the video
    OpenCL is used to offload part of the encoding when downscaling the video
     

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